Well, like above you could trade in games for a credit. You can use gift cards for other locations. Amazon will be free shipping, no tax, stuff like that. But here is what I feel...

Buying directly from SE eliminates the middle man fee and SE gets 100% of the profits. I would encourage anyone who doesn't have a reason not to buy from SE, to buy from them if for no other reason but to support them 100%. They clearly need the money and the sooner they start making money the sooner we see new content. That's just me. I got one from SE and one from Amazon so I can get my release day copy. SE might take a few days because sometimes that happens to these companies that don't sell stuff every waking second. That would be the only real drawback, the risk of not getting it release day. But you will have early access so that will make up for it, right?